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Sizing and maintaining your Hamilton watch

Maintaining your Hamilton watch

Hamilton guarantees the availability of replacement parts for at least 10 years after the end of production of every model. Everything possible will be done to ensure that collector's items and vintage watches can be serviced. If it is not possible to service an old watch, we will offer you in exchange a new watch at a favorable rate with our loyalty program.

Where can I have my Hamilton watch repaired?

To ensure professional service, you should only take your watch to an authorized Hamilton Service Center or your Hamilton retailer. You can find a list here

Why does Hamilton not send replacement parts directly to the customer?

We do not send replacement parts directly to our customers for technical and quality reasons. The authorized Hamilton Service Centers offer our customers a professional service that meets Hamilton's high quality standards.

How long is the lifetime of a watch battery?

Battery life varies usually from two to five years depending on the type of the watch, its dimensions and the amount of energy required by the different functions. If your watch has a seconds hand and it begins to jump in four-second intervals, the battery of your Hamilton watch needs to be replaced. This is an end of life indicator.

We recommend that you take your watch to an authorized Hamilton Service Center or Hamilton retailer to have your watch battery replaced as they have the necessary tools and testing equipment to carry out the work to Hamilton’s high quality standards.


Technical information about your Hamilton watch

What is the difference between a watch with an automatic winding, manual winding and quartz movement?

A mechanical movement is a micromechanical high precision instrument that takes its energy from a mainspring which is placed in the movement barrel. This mainspring is charged either by an oscillating weight that winds the watch mainspring as you move (automatic) or by hand (manual winding).

If you do not wear your automatic / mechanical watch for a few days, it will stop working and will need to be reset.

Quartz movements take their energy from a battery and a synthetic quartz regulates them.

All Hamilton movements are produced according to the strict quality standards of the Swatch Group.

How big are the course deviations of Hamilton mechanical watches?

The accuracy of a watch depends on the movement and the individual habits of the owner and can therefore vary. A qualified HAMILTON watchmaker can set the accuracy of a watch within the set tolerance. Most watches that do not have a chronometer certificate have an average course deviation of -10/+15 seconds per day. To be called a Chronometer, the mechanical watch mechanism must have an average course deviation of -4/+6 seconds per day.

What are the tolerances for the accuracy of Hamilton quartz watches?

All Hamilton quartz movements are produced in accordance with Hamilton's typically high quality standards and manufacturing methods. Environmental temperatures can affect the accuracy of quartz movements, leading to deviations of -0.5 to +0.7 seconds per day.

Where does Hamilton get its diamonds from?

All Hamilton diamonds are "Top Wesselton VSSI" quality. They are bought from legal sources that are not involved in financing conflicts and that comply with UN resolutions, as specified in the Precious Stone Certificate.

Where is my nearest Hamilton retailer?

Store locator

Where can I find a GLOSSARY to explain various watch terms?

Glossary link here

How can I be sure I am buying a genuine Hamilton watch?

You can be sure you are buying a genuine Hamilton watch if you buy it from an authorized Hamilton retailer or a Hamilton online store. To see the full list of official distributors please visit our store locator.

Your watch will be delivered together with an international warranty, duly completed, stamped and signed by the official Hamilton dealer.

Where can I get a Hamilton catalog?

Every official Hamilton retailer will be pleased to give you a catalogue if you ask for one. 


Shopping in our Hamilton online store

What is the Hamilton return policy?

Your order has been carefully packed and thoroughly inspected and we hope that you are pleased with the item(s) you have selected.

You can report any discrepancy in shipment or damages to Customer Service at 1-800-234-8463 option 2 or write to

14-day money back guarantee - We guarantee your satisfaction with all Hamilton merchandise.

You may return any unworn, undamaged merchandise, within 14 days of delivery for a full refund of purchase price (minus shipping and handling fees).

Any watch that fails quality inspection from Customer Service (scratches, worn, damaged) will be returned to you and no refund will be issued.

Straps altered (cut) are not returnable or exchangeable. Replacement straps can be ordered at an additional cost from our Spare Parts department at 1-800-234-8463 option 3.

All refunds will be issued only in the form of the original payment.

For more details please see our Delivery & Returns page

What if I need to cancel my online order?

You may cancel your order provided the order has not yet been shipped from our distribution center. Please call Customer Service at 1-800-234-8463 option 2.

My watch/strap is defective, what do I do?

The defective watch/strap must be returned to our distribution center within 14 days as post marked. If you receive a defective product, it will be checked by our Quality Control department, we will promptly send you a replacement after you have returned the damaged or defective product. For proper return procedures please see our return policy.

How do I determine my wrist size?

If you are purchasing a watch with a bracelet you might like to determine your wrist size before ordering the watch. This PDF shows how to measure your wrist.

How do I size the rubber strap for my watch?

Any rubber strap needs to be cut to size before the Hamilton watch can be worn. This PDF shows how to size the rubber strap.

*Please note that we do not accept returns once the rubber strap has been sized.

Can I get my Hamilton watch engraved?

At the moment it is not possible to customize individual Internet orders.

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